Method for producing an organic radiation-emitting component and organic radiation-emitting component

Abstract

A method for producing an organic radiation-emitting component is provided, comprising the following steps: A) providing an organic radiation-emitting layer sequence ( 10 ) having at least one organic functional layer ( 3 ), which is suited to emit electromagnetic radiation during operation, and a transparent layer ( 11 ), B) applying a transparent radiation decoupling layer ( 20 ) having a surface structure ( 21 ) onto a surface ( 12 ) of the transparent layer ( 11 ) facing away from the at least one functional layer ( 3 ) by means of spray coating. Furthermore, an organic radiation-emitting component is provided.

The invention claimed is: 
     
       1. A method for producing an organic radiation-emitting component, comprising the steps of:
 A) providing an organic radiation-emitting layer sequence having at least one organic functional layer suitable for emitting electromagnetic radiation during operation, and a transparent layer; and 
 B) applying a transparent radiation coupling-out layer having a surface structure on a surface of the transparent layer facing away from the at least one functional layer by means of spray coating, 
 wherein, in step B, at least two materials which are insoluble in one another are applied by spraying liquid drops including said at least two materials. 
 
     
     
       2. The method according to  claim 1 , wherein in method step B, the radiation coupling-out layer is applied by spray coating in the form of individual liquid drops. 
     
     
       3. The method according to  claim 2 , wherein in method step B, said individual liquid drops dry individually on the surface of the transparent layer to form the radiation coupling-out layer. 
     
     
       4. The method according to  claim 2 , wherein in method step B, a crosslinkable material in a liquid phase, a solution, a suspension or a combination thereof is applied in the form of said individual liquid drops, wherein the radiation coupling-out layer is formed by means of drying and/or crosslinking of the material. 
     
     
       5. The method according to  claim 2 , wherein said individual liquid drops form during drying residues having a prism-like form, a pyramid-like form, a meniscus-like form or a combination thereof. 
     
     
       6. The method according to  claim 2 , wherein each of said individual liquid drops includes only one of said at least two materials. 
     
     
       7. The method according to  claim 1 , wherein in method step B, one or a plurality of materials from a group formed by acrylate, silicone, epoxide, polycarbonate, natural plastic is or are applied by spray coating. 
     
     
       8. The method according to  claim 1 , wherein in method step B, a material comprising scattering particles is applied by spray coating. 
     
     
       9. The method according to  claim 1 , wherein in method step B, the radiation coupling-out layer is applied in a laterally structured fashion on the surface of the transparent layer. 
     
     
       10. The method according to  claim 1 , wherein method step B comprises the following substeps:
 B1) applying a first material by spray coating, and 
 B2) applying a second material to the first material by spray coating. 
 
     
     
       11. The method according to  claim 1 , wherein each of said at least two materials can be liquids and/or solids. 
     
     
       12. An organic radiation-emitting component, comprising:
 an organic radiation-emitting layer sequence having at least one organic functional layer suitable for emitting electromagnetic radiation during operation, and a transparent layer; and 
 a transparent radiation coupling-out layer on a surface of the transparent layer which is remote from the at least one functional layer, 
 wherein the transparent radiation coupling-out layer has a first layer comprising a first material and a second layer comprising a second material, and 
 wherein each of the first and the second layers is formed from residues of a plurality of individually dried liquid drops so that the transparent radiation coupling-out layer has a surface structure formed from residues of a plurality of said individually dried liquid drops. 
 
     
     
       13. The component according to  claim 12 , wherein the residues have a size of less than or equal to 1 micrometer. 
     
     
       14. The component according to  claim 12 , wherein the residues have a prism-like form, a pyramid-like form, a meniscus-like form or a combination thereof. 
     
     
       15. The component according to  claim 14 , wherein the residues have a height-to-base-area ratio of greater than or equal to 0.1. 
     
     
       16. A method for producing an organic radiation-emitting component, comprising the steps of:
 A) providing an organic radiation-emitting layer sequence having at least one organic functional layer suitable for emitting electromagnetic radiation during operation, and a transparent layer; and 
 B) applying a transparent radiation coupling-out layer having a surface structure on a surface of the transparent layer facing away from the at least one functional layer by means of spray coating, 
 wherein method step B comprises the following substeps:
 B1) applying drops of a liquid first material by spray coating; and 
 B2) applying drops of a liquid second material to the first material by spray coating.